Results 41 to 50 of about 11,635 (239)

On separation axioms of uniform bundles and sheaves

open access: yesApplied General Topology, 2004
In the context of the theory of uniform bundles in the sense of J. Dauns and K. H. Hofmann, the topology of the fiber space of a uniform bundle depends on the assumption of upper semicontinuity of its defining set of pseudometrics when composed with ...
Clara M. Neira U., Januario Varela
doaj   +1 more source

Upper Semicontinuous Decompositions of the n-Sphere [PDF]

open access: yesProceedings of the American Mathematical Society, 1962
We consider conditions under which an upper semicontinuous decomposition has the decomposition space which is a topological nsphere. A special emphasis is placed on the case in which the decomposition has only a countable number of nondegenerate elements.
openaire   +2 more sources

On the Wu metric in unbounded domains

open access: yes, 2007
We discuss the properties of the Wu pseudometric and present counterexamples for its upper semicontinuity that answers the question posed by Jarnicki and Pflug.
Jucha, Piotr
core   +1 more source

The lower semicontinuity of the Frobenius splitting numbers [PDF]

open access: yes, 2010
We show that, under mild conditions, the (normalized) Frobenius splitting numbers of a local ring of prime characteristic are lower semicontinuous.Comment: 13 pages, revised version, to appear in Mathematical Proceedings of the Cambridge Philosophical ...
Enescu, Florian, Yao, Yongwei
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Upper semicontinuous decompositions of developable spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1965
Presented here are theorems concerning upper semicontinuous decompositions of developable spaces, topological in the sense that the common parts of intersecting domains (open sets) are open. Theorem 1 shows that, if the elements of such a decomposition do not have nonbicompact [I] intersections with the closures of their complements, the decomposition ...
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Value Functions for Bolza Problems with Discontinuous Lagrangians and Hamilton-Jacobi Inequalities [PDF]

open access: yes, 2000
We investigate the value function of the Bolza problem of the Calculus of Variations $$ V (t,x)=\inf \{\int_{0}^{t} L (y(s),y'(s))ds + \phi(y(t)) : y \in W^{1,1} (0,t; R^n) ; y(0)=x \}, $$ with a lower semicontinuous Lagrangian $L$ and a final cost ...
Amar   +17 more
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Separating sets by upper semicontinuous and Darboux upper semicontinuous functions

open access: yesTopology and its Applications, 2013
Abstract In this paper we characterize the pairs ( A 0 , A 1 ) and ( A − , A + ) of disjoint sets which can be separated by an upper semicontinuous function and by a Darboux upper semicontinuous function.
openaire   +1 more source

Attractors of multivalued semiflows generated by differential inclusions and their approximations

open access: yesAbstract and Applied Analysis, 2000
We prove the existence of global compact attractors for differential inclusions and obtain some results concerning the continuity and upper semicontinuity of the attractors for approximating and perturbed inclusions.
Alexei V. Kapustian, José Valero
doaj   +1 more source

Asymptotic behavior for non-autonomous stochastic plate equation on unbounded domains

open access: yesOpen Mathematics, 2019
We study the asymptotic behavior of solutions to the non-autonomous stochastic plate equation driven by additive noise defined on unbounded domains.
Yao Xiaobin, Liu Xilan
doaj   +1 more source

Upper semicontinuous utilities for all upper semicontinuous total preorders

open access: yesMathematical Social Sciences
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bosi G., Sbaiz G.
openaire   +3 more sources

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